Shareholders' Equity Share-Repurchase Programs (Details) $ in Thousands	Mar. 30, 2019 USD ($)
Share-Repurchase Programs [Line Items]
Stock Repurchase Program, Authorized Amount	$ 1,000,000
Stock Repurchase Program, Dollar Value of Shares Repurchased	311,395
Stock Repurchase Program, Remaining Authorized Repurchase Amount	688,605
Shares Approved December 2016 [Member]
Share-Repurchase Programs [Line Items]
Stock Repurchase Program, Authorized Amount	400,000
Stock Repurchase Program, Dollar Value of Shares Repurchased	311,395
Stock Repurchase Program, Remaining Authorized Repurchase Amount	88,605
Shares Approved December 2018 [Member]
Share-Repurchase Programs [Line Items]
Stock Repurchase Program, Authorized Amount	600,000
Stock Repurchase Program, Dollar Value of Shares Repurchased	0
Stock Repurchase Program, Remaining Authorized Repurchase Amount	$ 600,000